1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW15548 Polypropylene Copolymer - UV Stable Mineral Filled Copyright 2013 General Motors Company All Rights Reserved December 2013 Page 1 of 8 1 Scope Note: Nothing in this standard supercedes applicable laws and regulations. Note: In the even
2、t of conflict between the English and domestic language, the English language shall take precedence. 1.1 Material Description. This specification describes the properties of injection moldable, mineral filled polypropylene copolymer, ultraviolet (UV) stable, pellet form material. 1.1.1 Additional Ch
3、aracteristics. Materials certified to this material specification may have additional characteristics, e.g., paintable, elastomer modified, etc. Possible additional characteristics are defined in GMW3013. 1.1.2 Types. The classification into groups is according to the different properties as describ
4、ed in Table 1. 1.2 Symbols. The material abbreviation according to ISO 11469 is GMW15548P-PP/PE-M15. 1.3 Typical Applications. Typical applications include the following: interior trims. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Sta
5、ndards/Specifications. AATCC 23 ISO 178 ISO 1050 ISO 3451-1 ASTM D3012 ISO 179/1eA ISO 1133 ISO 4577 ASTM D3763 ISO 188 ISO 1183-A ISO 6603-1/2 ASTM E831 ISO 294 ISO 1873-2 ISO 11359-2 ISO 75-1/2 ISO 527-1/2 ISO 3167 ISO 11469 2.2 GM Standards/Specifications. GM9302P GMW3221 GMW14162 GMW15634 GMW301
6、3 GMW3232 GMW14444 GMW16172 GMW3059 GMW3235 GMW14688 GMW16853 GMW3205 GMW3417 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documents (available at ). 3 Requirements 3.1 Requirements on Test Specimens. Reference GMW3221. 3.1.1 Material Requirements. Materials approved to this
7、 specification shall meet the requirements of GMW3013, General Requirements for Handling of Technical Terms of Delivery for Plastics. 3.1.2 Requirements on Delivery. Important physical, mechanical and thermal properties that characterize the material are summarized in Table 1 and Table 2. Note: For
8、each product, the requirements to Table 1 and Table 2 shall be documented by Certification Statement according to GMW3013. The color shall be specified on drawings, in material specifications and otherwise. 3.2 Requirements on Test Specimens. Copyright General Motors Company Provided by IHS under li
9、cense with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15548 Copyright 2013 General Motors Company All Rights Reserved December 2013 Page 2 of 8 3.2.1 Unless otherwise specified, injection molding of t
10、est specimens shall be accomplished per ISO 294 with the conditions for injection molding from ISO 1873-2. Test methods and specimen dimensions are also to be in accordance with ISO 1873-2 with the following additions: use ISO 3167, Type 1A, (GMW3221) thickness 4 mm for tensile and flexural properti
11、es. 3.2.2 All tests shall be performed on specimens 40 h minimum after molding and immediately following a conditioning period of 24 h minimum in a controlled atmosphere per GMW3221, Code A, unless otherwise specified. All tests shall be performed on unannealed specimens. In addition, test specified
12、 below or above 23 C 3 C shall be conducted at specific temperature using specimens conditioned at specified temperature for 4 h minimum. 3.2.3 The values specified in Table 1 shall be met by test specimens in natural or black; the values specified in Table 2 shall be met by integrally colored test
13、specimens. For integrally colored grades where other additive systems (e.g., stabilizer) are used, the impact values shall not decrease more than 10% from specified minimum value. 3.3 Chemical Requirements. All parts manufactured from molding compounds shall be resistant to the media they contact at
14、 their place of use. 3.4 Compound Properties. See Table 1 and Table 2. The following are also required for full specification approval. The minimum number of lots per test required is one in natural: Tensile Modulus, Poissons Ratio, and Stress Strain Curve at multiple temperatures, e.g., +23 C, +85
15、C, -30 C; and Multiaxial Impact Curve. See GMW3013 for the test procedures and parameters. 3.5 Performance Requirements. Performance requirements, e.g., flammability, fogging or resistance to odor, shall be specified on part drawings or in component specifications. All finished parts for interior ap
16、plications shall meet the requirements according to GMW14444. Table 1: Compound Properties (Black or Natural) Property Standard Units Types and Requirements T2 T4 T6 Class A Class B Class C Paintable (No UV and No Scratch Additives) ISO Symbol ISO 11469 N/A PP/PE-M15PP/EP-M20PP/PE-M15 Filler Content
17、 ISO 3451-1 Method A (at +600 C) % 15 2 20 2 15 2 Density (Target Range) ISO 1183-A g/cm3 1.0 0.02 1.05 0.02 1.00 0.02 Melt Flow Rate MFR230/2.16 ISO 1133 g/10 minimum 15 to 25 10 to 20 14 to 25 Melt Volume Flow Rate MVR230/2.16 ISO 1133 cm3/10 minimum 20 to 30 10 to 25 16 to 25 Flexural Modulus ISO
18、 178, 2 mm/minute test speed MPa 1200 to 1800 2000 to 2800 2000 to 2600 Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15548 Copyright 2
19、013 General Motors Company All Rights Reserved December 2013 Page 3 of 8 Property Standard Units Types and Requirements T2 T4 T6 Class A Class B Class C Paintable (No UV and No Scratch Additives) Tensile Modulus ISO 527-1 ISO 527-2 Specimen 1A, 1 mm/minute test speed MPa 1400 to 2000 2000 to 3000 21
20、00 to 2700 Tensile Stress at Yield ISO 527-1 ISO 527-2 Specimen 1A, 50 mm/minute test speed MPa 17 24 26 Tensile Stress at Yield after Heat Aging (1000 h 5 h at 100 C 3 C) Note 1 ISO 527-1 ISO 527-2 50 mm/minute test speed % Retention 90 Note 2 90 Note 2 100 Note 2 Multiaxial Impact at 23 C ISO 6603
21、-1/2 Specimen 60 mm diameter x 2 mm, or 60 mm x 2 mm x 2 mm plaque 4.4 m/s speed J at maxi-mum Load 10 10 10 Multiaxial Impact at (minus) -30 C ISO 6603-1/2 Specimen 60 mm diameter x 2 mm, or 60 mm x 2 mm x 2 mm plaque 4.4 m/s speed J at maxi-mum Load 8 6 10 Multiaxial Impact at 23 C ASTM D3763 6.6
22、m/s speed J at maxi- mum Load Report 4 15 Multiaxial Impact at (minus) -30 C ASTM D3763 6.6 m/s speed J at maxi-mum Load Report 4 10 Notched Charpy Impact at 23 C ISO 179/1eA kJ/m2 10 3 4 Notched Charpy Impact at -30 C ISO 179/1eA kJ/m2 2 1.5 2 Mold Shrink, 48 h After Molding, Flow Direction ISO 294
23、, plaque size 101.6 mm x 152 mm x 3.2 mm % Target 1.1 to 1.5 Target 0.8 to 1.2 Target 0.9 to 1.2 Mold Shrink, 48 h After Molding, Cross Flow Direction ISO 294, plaque size 101.6 mm x 152 mm x 3.2 mm % Target 1.2 to 1.6 Target 1.0 to 1.4 Target 0.9 to 1.2 Mold Shrink, 48 h at 80 C After Molding, Flow
24、 Direction ISO 294, plaque size 101.6 mm x 152 mm x 3.2 mm % Target 1.2 to 1.6 Target 1.0 to 1.5 Target 1.0 to1.3 Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE
25、ENGINEERING STANDARDS GMW15548 Copyright 2013 General Motors Company All Rights Reserved December 2013 Page 4 of 8 Property Standard Units Types and Requirements T2 T4 T6 Class A Class B Class C Paintable (No UV and No Scratch Additives) Mold Shrink, 48 h at 80 C After Molding, Cross Flow Direction
26、ISO 294, plaque size 101.6 mm x 152 mm x 3.2 mm % Target 1.3 to1.6 Target 1.2 to 1.6 Target 1.1 to1.4 Heat Deflection Temperature (HDT) Method B, 0.45 MPa, Flatwise ISO 75-1 ISO 75-2 80 mm x 10 mm x 4 mm, unannealed C 90 110 105 HDT Method A, 1.8 MPa, Flatwise ISO 75-1 ISO 75-2 80 x mm 10 mm x 4 mm,
27、 unannealed C 50 60 55 Coefficient of Linear Thermal Expansion (CLTE) Flow Direction (report one lot for information only) ASTM E831 or ISO 11359-2 10-6 mm/mm C Target 70 to 120 Target 70 to 120 Target 65 to 110 CLTE Cross Flow Direction (report one lot for information only) ASTM E831 or ISO 11359-2
28、 10-6 mm/mm C Target 100 to 160 Target 80 to 150 Target 75 to 120 Fogging GMW3235-B, condensable constituent mg 2.0 Odor GMW3205 B, specimen 100 mm x 150 mm x 3.2 mm N/A Minimum 6 Emissions GMW15634 Volatile Organic Compound (VOC) value Semi-volatile Organic Compound (SVOC) value g/g g/g Requirement
29、s see GMW16853 Thermal Oxidative Stability Note 3 ISO 4577, ASTM D3012 168 h at 150 C N/A No visual degradation Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE EN
30、GINEERING STANDARDS GMW15548 Copyright 2013 General Motors Company All Rights Reserved December 2013 Page 5 of 8 Property Standard Units Types and Requirements T2 T4 T6 Class A Class B Class C Paintable (No UV and No Scratch Additives) Flammability GMW3232 mm per minute No burn or flame front transm
31、ission across the surface at a rate greater than 100 mm/minute. Paintability GMW16172 N/A N/A Table 1 for Interior Plastics Note 1: Only for the Heat Stabilized Material (code letter H). Note 2: Aged specimens shall have retention 100% relative to unaged specimens tested concurrently. Note 3: Ageing
32、 in a circulatory oven for 336 h at 150 C or per Materials Engineer requirements. N/A = Not applicable. Table 2: Compound Properties (Integrally Colored) Property Standard Units Types and Requirements T2 T4 T6 Class A Class B Colorfastness to Light, Natural Weathering Color Change Surface Defects We
33、ather Resistance per GMW3417-L1-F2-G1-T5 Test at the following intervals: 1250 MJ/m2 (30 000 ly), 2300 MJ/m2 ( 55 000 ly), 3350 MJ/m2 ( 80 000 ly), 4400 MJ/m2 (105 000 ly) E E= 3.0 maximum No objectionable defects allowed. Note: Test specimen required to be returned to customer at each interval. Col
34、orfastness to Light, Accelerated Color Change Surface Defects Xenon Arc according to GMW14162/D/ 300 kJ/m2 and 1240.8 kJ/m2 E E= 3.0 maximum No objectionable defects allowed. Note: Separate test panels are required for each exposure. Colorfastness to Artificial Light GMW14162/C/26 MJ/m2 Rating Ratin
35、g of minimum 4 (Also, there shall be no more than a noticeable change in hue or chrome, and no objectionable tackiness, blotchiness, loss of grain, wrinkling or other undesirable effects.) Emissions GMW15634 Volatile Organic Compound (VOC) value Semi-volatile Organic Compound (SVOC) value g/g g/g Re
36、quirements see GMW16853 Flammability GMW3232 mm per minute No burn or flame front transmission across the surface at a rate greater than 100 mm/minute. Notched Charpy Impact at 23 C ISO 179/1eA kJ/m2 0% Note 1 Copyright General Motors Company Provided by IHS under license with General Motors Company
37、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15548 Copyright 2013 General Motors Company All Rights Reserved December 2013 Page 6 of 8 Property Standard Units Types and Requirements T2 T4 T6 Class A Class B Stress Mark Susce
38、ptibility GM9302P SET SET= 2.5 maximum Colorfastness to Burnt Gas AATCC 23 or ISO 1050 G02- light neutral or light gray E; YI E1.5; YI 2.0 Scratch Resistance GMW14688-A-10N; GM North American Appearance Engineering (NAAE) Interior WPEPGLD Plastic Color Submission Plaque Across all grains except modi
39、fied Kruz For initial approval in MATSPC, Test one (1) lot in ebony (black), grey and neutral. For color approval, each color must be tested. For other regions use Master Plaques with the grains, colors and gloss levels as defined in the Acceptance Requirements Document (ARD) sheet of the correspond
40、ing GM Program L 2.0 2.0 0.5 1.5 Scratch Resistance After Heat Aging Note 2 GMW14688-A-10N; GM North American Appearance Engineering (NAAE) Interior WPEPGLD Plastic Color Submission Plaque Across all grains except modified Kruz For initial approval in MATSPC, Test one (1) lot in ebony (black), grey
41、and neutral. For color approval, each color must be tested. L Across all grains except modified Kruz Note 3 Note 1: Colored specimens shall have retention 80% relative to natural specimens tested concurrently. Note 2: Heat aging for 168 h at 100 C 5 C according to ISO 188 Method A (air oven method).
42、 Test after 24 h recovery. Note 3: Aged specimens shall have at least the same scratch results relative to unaged specimens tested concurrently. SET = Stress Evaluation Test 4 Manufacturing Process Not applicable. 5 Rules and Regulations 5.1 Legal Regulations. All materials must satisfy applicable l
43、aws, rules, regulations and recommendations valid in the country of usage. 5.2 Language. In the event of conflict between the English and domestic language, the English language shall take precedence. 5.3 Inspection and Rejection. Samples of components or materials released to a GM material specific
44、ation shall be tested for conformity with the requirements of this material specification and approved by the responsible Engineering department prior to commencement of delivery of bulk supplies. A new approval must be received for any changes, e.g., properties, manufacturing process, location of m
45、anufacture, etc. If not otherwise agreed, all testing and documentation normally required for initial release must be completed. It is the responsibility of the supplier to inform the customer in a timely manner, without solicitation, and to include documentation of all modifications of materials an
46、d/or processes and to apply for a new release. If not otherwise agreed, all release tests shall be repeated and documented by the supplier prior to commencement of delivery of non-conforming bulk supplies. In individual cases, a shorter test can be agreed to between the responsible Engineering depar
47、tment and the supplier. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW15548 Copyright 2013 General Motors Company All Rights Reserved D
48、ecember 2013 Page 7 of 8 5.4 Material Safety Data Sheets/Safety Data Sheets (MSDS/SDS). For new product submissions, or when a change in chemical composition of an existing product has occurred, a complete copy of the Material Safety Data Sheet/Safety Data Sheet must be submitted in compliance with the Globally Harmonized System of Classification and Labeling of Chemicals (GHS) requirements or other country-specific MSDS/SDS requirements. In addition, product MSDS/SDS submissions must be in compliance with specific country General Motors TMC003 Material Safety Data Sheet/
